classic wow auction house api (#61)

* auctionHouseIndex struct & function to call the api

* added function for retrieving auctions data

* added comments to auction related types

wowcgd.go

@@ -9,6 +9,26 @@ import (
 	"github.com/FuzzyStatic/blizzard/v3/wowsearch"
 )
 
+// ClassicWoWAuctionHouseIndex returns an index of auction houses for a given realmID
+func (c *Client) ClassicWoWAuctionHouseIndex(ctx context.Context, connectedRealmID int) (*wowcgd.AuctionHouseIndex, *Header, error) {
+	dat, header, err := c.getStructData(ctx,
+		fmt.Sprintf("/data/wow/connected-realm/%d/auctions/index", connectedRealmID),
+		c.GetDynamicClassicNamespace(),
+		&wowcgd.AuctionHouseIndex{},
+	)
+	return dat.(*wowcgd.AuctionHouseIndex), header, err
+}
+
+// ClassicWoWAuctions returns all auctions by realmID and auctionHouseID
+func (c *Client) ClassicWoWAuctions(ctx context.Context, connectedRealmID, auctionHouseID int) (*wowcgd.Auctions, *Header, error) {
+	dat, header, err := c.getStructData(ctx,
+		fmt.Sprintf("/data/wow/connected-realm/%d/auctions/%d", connectedRealmID, auctionHouseID),
+		c.GetDynamicClassicNamespace(),
+		&wowcgd.Auctions{},
+	)
+	return dat.(*wowcgd.Auctions), header, err
+}
+
 // ClassicWoWConnectedRealmsIndex returns an index of connected realms.
 func (c *Client) ClassicWoWConnectedRealmsIndex(ctx context.Context) (*wowcgd.ConnectedRealmsIndex, *Header, error) {
 	dat, header, err := c.getStructData(ctx,

wowcgd/auctionHouse.go

@@ -0,0 +1,44 @@
+package wowcgd
+
+// AuctionHouseIndex structure
+type AuctionHouseIndex struct {
+	Links struct {
+		Self struct {
+			Href string `json:"href"`
+		} `json:"self"`
+	} `json:"_links"`
+	Auctions []struct {
+		Key struct {
+			Href string `json:"href"`
+		} `json:"key"`
+		Name string `json:"name"`
+		ID   int    `json:"id"`
+	} `json:"auctions"`
+}
+
+// Auctions structure
+type Auctions struct {
+	Linkds struct {
+		Self struct {
+			Href string `json:"href"`
+		} `json:"self"`
+	} `json:"_links"`
+	ConnectedRealm struct {
+		Href string `json:"href"`
+	} `json:"connected_realm"`
+	Auctions []Auction `json:"auctions"`
+	ID       int       `json:"id"`
+	Name     string    `json:"name"`
+}
+
+// Auction structure
+type Auction struct {
+	ID   int `json:"id"`
+	Item struct {
+		ID int `json:"id"`
+	} `json:"item"`
+	Bid      int    `json:"bid"`
+	Buyout   int    `json:"buyout"`
+	Quantity int    `json:"quantity"`
+	TimeLeft string `json:"time_left"`
+}